{"id":3641,"date":"2026-03-26T17:20:34","date_gmt":"2026-03-26T09:20:34","guid":{"rendered":"https:\/\/www.go2posts.com\/cn\/command-pattern-undoable-operations-guide\/"},"modified":"2026-03-26T17:20:34","modified_gmt":"2026-03-26T09:20:34","slug":"command-pattern-undoable-operations-guide","status":"publish","type":"post","link":"https:\/\/www.go2posts.com\/cn\/command-pattern-undoable-operations-guide\/","title":{"rendered":"OOAD\u6307\u5357\uff1a\u7528\u4e8e\u53ef\u64a4\u9500\u64cd\u4f5c\u7684\u547d\u4ee4\u6a21\u5f0f"},"content":{"rendered":"

\u5728\u2026\u2026\u7684\u9886\u57df\u4e2d\u9762\u5411\u5bf9\u8c61\u5206\u6790\u4e0e\u8bbe\u8ba1<\/strong>\uff0c\u7ba1\u7406\u7528\u6237\u64cd\u4f5c\u548c\u7cfb\u7edf\u72b6\u6001\u9700\u8981\u4e00\u79cd\u7a33\u5065\u7684\u67b6\u6784\u65b9\u6cd5\u3002\u547d\u4ee4\u6a21\u5f0f\u4f5c\u4e3a\u4e00\u79cd\u57fa\u7840\u7684\u7ed3\u6784\u89e3\u51b3\u65b9\u6848\uff0c\u5c24\u5176\u5728\u5904\u7406\u53ef\u64a4\u9500\u64cd\u4f5c<\/strong>\u65f6\u5c24\u4e3a\u7a81\u51fa\u3002\u8be5\u8bbe\u8ba1\u6a21\u5f0f\u5c06\u8bf7\u6c42\u5c01\u88c5\u4e3a\u4e00\u4e2a\u5bf9\u8c61\uff0c\u4f7f\u4f60\u80fd\u591f\u4f7f\u7528\u4e0d\u540c\u7684\u8bf7\u6c42\u53c2\u6570\u5316\u5ba2\u6237\u7aef\uff0c\u5bf9\u8bf7\u6c42\u8fdb\u884c\u6392\u961f\uff0c\u6216\u8bb0\u5f55\u64cd\u4f5c\u3002\u672c\u6307\u5357\u63a2\u8ba8\u4e86\u5982\u4f55\u4f7f\u7528\u6b64\u6a21\u5f0f\u5b9e\u73b0\u64a4\u9500\u529f\u80fd\uff0c\u800c\u65e0\u9700\u4f9d\u8d56\u7279\u5b9a\u7684\u8f6f\u4ef6\u5de5\u5177\u3002<\/p>\n

\n
\"Hand-drawn<\/figure>\n<\/div>\n

\u7406\u89e3\u6838\u5fc3\u76ee\u6807 \ud83c\udfaf<\/h2>\n

\u6b64\u67b6\u6784\u6a21\u5f0f\u7684\u4e3b\u8981\u76ee\u6807\u662f\u5c06\u8c03\u7528\u64cd\u4f5c\u7684\u5bf9\u8c61\u4e0e\u6267\u884c\u64cd\u4f5c\u7684\u5bf9\u8c61\u89e3\u8026\u3002\u5728\u6784\u5efa\u9700\u8981\u53ef\u64a4\u9500\u64cd\u4f5c<\/strong>\u7684\u5e94\u7528\u7a0b\u5e8f\u65f6\uff0c\u590d\u6742\u6027\u4f1a\u663e\u8457\u589e\u52a0\u3002\u7528\u6237\u671f\u671b\u80fd\u591f\u64a4\u9500\u9519\u8bef\u3002\u5f00\u53d1\u8005\u9700\u8981\u786e\u4fdd\u7cfb\u7edf\u5728\u64a4\u9500\u540e\u72b6\u6001\u4fdd\u6301\u4e00\u81f4\u3002\u547d\u4ee4\u6a21\u5f0f\u901a\u8fc7\u5c06\u64cd\u4f5c\u89c6\u4e3a\u4e00\u7b49\u5bf9\u8c61\u6765\u89e3\u51b3\u8fd9\u4e00\u95ee\u9898\u3002<\/p>\n

\u8bbe\u60f3\u4e00\u4e2a\u7528\u6237\u4fee\u6539\u6587\u6863\u7684\u573a\u666f\u3002\u5982\u679c\u53d1\u751f\u9519\u8bef\uff0c\u7cfb\u7edf\u5fc5\u987b\u6062\u590d\u5230\u4e4b\u524d\u7684\u72b6\u6001\u3002\u8fd9\u4e0d\u4ec5\u4ec5\u662f\u4e00\u6b21\u51fd\u6570\u8c03\u7528\uff0c\u800c\u662f\u4e00\u4e2a\u8bf7\u6c42\u5bf9\u8c61\u3002\u901a\u8fc7\u5c06\u201c\u4fdd\u5b58\u201d\u3001\u201c\u5220\u9664\u201d\u6216\u201c\u4fee\u6539\u201d\u7684\u903b\u8f91\u5c01\u88c5\u5230\u547d\u4ee4\u4e2d\uff0c\u7cfb\u7edf\u83b7\u5f97\u4e86\u7075\u6d3b\u6027\u3002\u8fd9\u6837\u5c31\u53ef\u4ee5\u5c06\u8fd9\u4e9b\u547d\u4ee4\u5806\u53e0\u8d77\u6765\uff0c\u67e5\u770b\u64cd\u4f5c\u5386\u53f2\uff0c\u5e76\u9010\u4e2a\u64a4\u9500\u5b83\u4eec\u3002<\/p>\n

    \n
  • \u5c01\u88c5\uff1a<\/strong> \u6240\u6709\u6267\u884c\u64cd\u4f5c\u6240\u9700\u7684\u4fe1\u606f\u90fd\u5305\u542b\u5728\u547d\u4ee4\u5bf9\u8c61\u4e2d\u3002<\/li>\n
  • \u89e3\u8026\uff1a<\/strong> \u8c03\u7528\u8005\u65e0\u9700\u4e86\u89e3\u63a5\u6536\u8005\u7684\u5177\u4f53\u7ec6\u8282\u3002<\/li>\n
  • \u53ef\u6269\u5c55\u6027\uff1a<\/strong> \u53ef\u4ee5\u65b0\u589e\u547d\u4ee4\uff0c\u800c\u65e0\u9700\u4fee\u6539\u73b0\u6709\u7684\u5ba2\u6237\u7aef\u4ee3\u7801\u3002<\/li>\n<\/ul>\n

    \u547d\u4ee4\u67b6\u6784\u7684\u5173\u952e\u7ec4\u4ef6 \u2699\ufe0f<\/h2>\n

    \u8981\u6709\u6548\u5b9e\u73b0\u53ef\u64a4\u9500\u64cd\u4f5c<\/strong>\uff0c\u5fc5\u987b\u7406\u89e3\u5176\u4e2d\u6d89\u53ca\u7684\u56db\u4e2a\u4e3b\u8981\u89d2\u8272\u3002\u6bcf\u4e2a\u89d2\u8272\u90fd\u6709\u5176\u7279\u5b9a\u804c\u8d23\uff0c\u5171\u540c\u4fdd\u969c\u7cfb\u7edf\u7684\u7a33\u5b9a\u6027\u3002<\/p>\n

    1. \u5ba2\u6237\u7aef \ud83e\uddd1\u200d\ud83d\udcbb<\/h3>\n

    \u5ba2\u6237\u7aef\u521b\u5efa\u547d\u4ee4\u5bf9\u8c61\u3002\u5b83\u77e5\u9053\u5e94\u5c06\u54ea\u4e2a\u63a5\u6536\u8005\u4e0e\u54ea\u4e2a\u547d\u4ee4\u5173\u8054\uff0c\u4ee5\u53ca\u547d\u4ee4\u9700\u8981\u54ea\u4e9b\u53c2\u6570\u3002\u5728\u5178\u578b\u7684\u5de5\u4f5c\u6d41\u7a0b\u4e2d\uff0c\u5ba2\u6237\u7aef\u521d\u59cb\u5316\u5177\u4f53\u547d\u4ee4\uff0c\u8bbe\u7f6e\u5fc5\u8981\u7684\u72b6\u6001\uff0c\u5e76\u5c06\u5176\u4f20\u9012\u7ed9\u8c03\u7528\u8005\u3002<\/p>\n

    2. \u547d\u4ee4\u63a5\u53e3 \ud83d\udcdc<\/h3>\n

    \u8fd9\u662f\u4e00\u4e2a\u62bd\u8c61\u5951\u7ea6\u3002\u5b83\u58f0\u660e\u4e86\u4e00\u4e2aexecute\u65b9\u6cd5\u3002\u4efb\u4f55\u5b9e\u73b0\u6b64\u63a5\u53e3\u7684\u547d\u4ee4\u7c7b\u90fd\u5fc5\u987b\u63d0\u4f9b\u6267\u884c\u64cd\u4f5c\u7684\u903b\u8f91\u3002\u5bf9\u4e8e\u64a4\u9500\u529f\u80fd\uff0c\u5177\u4f53\u547d\u4ee4\u8fd8\u9700\u5b9e\u73b0reverse\u65b9\u6cd5\u3002\u8fd9\u79cd\u5206\u79bb\u4f7f\u7cfb\u7edf\u80fd\u591f\u533a\u5206\u6267\u884c\u4e0e\u64a4\u9500\u64cd\u4f5c\u3002<\/p>\n

    3. \u63a5\u6536\u8005 \ud83d\udda5\ufe0f<\/h3>\n

    \u63a5\u6536\u8005\u5305\u542b\u5b9e\u9645\u7684\u4e1a\u52a1\u903b\u8f91\u3002\u5b83\u77e5\u9053\u5982\u4f55\u6267\u884c\u64cd\u4f5c\u3002\u4f8b\u5982\uff0c\u5728\u6587\u672c\u7f16\u8f91\u573a\u666f\u4e2d\uff0c\u63a5\u6536\u8005\u7ba1\u7406\u6587\u672c\u7f13\u51b2\u533a\u3002\u547d\u4ee4\u5bf9\u8c61\u8c03\u7528\u63a5\u6536\u8005\u7684\u65b9\u6cd5\uff0c\u4f46\u5e76\u4e0d\u4e86\u89e3\u63a5\u6536\u8005\u5b9e\u73b0\u7ec6\u8282\u7684\u5177\u4f53\u5185\u5bb9\u3002<\/p>\n

    4. \u8c03\u7528\u8005 \ud83d\ude80<\/h3>\n

    \u8c03\u7528\u8005\u8d1f\u8d23\u89e6\u53d1\u547d\u4ee4\u3002\u5b83\u4fdd\u5b58\u5bf9\u547d\u4ee4\u5bf9\u8c61\u7684\u5f15\u7528\uff0c\u5e76\u8c03\u7528\u5176execute\u65b9\u6cd5\u3002\u81f3\u5173\u91cd\u8981\u7684\u662f\uff0c\u5bf9\u4e8e\u53ef\u64a4\u9500\u64cd\u4f5c<\/strong>\uff0c\u8c03\u7528\u8005\u901a\u5e38\u4f1a\u7ba1\u7406\u4e00\u4e2a\u5386\u53f2\u6808\u3002\u5b83\u4e0d\u77e5\u9053\u547d\u4ee4\u7684\u5177\u4f53\u4f5c\u7528\uff1b\u5b83\u53ea\u77e5\u9053\u5982\u4f55\u6267\u884c\u8be5\u547d\u4ee4\u3002<\/p>\n\n\n\n\n\n\n\n\n
    \u7ec4\u4ef6<\/th>\n\u804c\u8d23<\/th>\n\u793a\u4f8b\u4e0a\u4e0b\u6587<\/th>\n<\/tr>\n<\/thead>\n
    \u5ba2\u6237\u7aef<\/td>\n\u5b9e\u4f8b\u5316\u547d\u4ee4<\/td>\n\u7528\u6237\u70b9\u51fb\u4e00\u4e2a\u6309\u94ae<\/td>\n<\/tr>\n
    \u547d\u4ee4\u63a5\u53e3<\/td>\n\u5b9a\u4e49 execute\/undo \u65b9\u6cd5<\/td>\n\u62bd\u8c61\u57fa\u7c7b<\/td>\n<\/tr>\n
    \u63a5\u6536\u8005<\/td>\n\u6267\u884c\u5b9e\u9645\u5de5\u4f5c<\/td>\n\u6587\u672c\u7f13\u51b2\u533a\u7ba1\u7406\u5668<\/td>\n<\/tr>\n
    \u8c03\u7528\u8005<\/td>\n\u7ba1\u7406\u5386\u53f2\u8bb0\u5f55\u548c\u6267\u884c<\/td>\n\u5e94\u7528\u7a0b\u5e8f\u4e3b\u5faa\u73af<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    \u5b9e\u73b0\u5386\u53f2\u6808 \ud83d\udcda<\/h2>\n

    \u7684\u6838\u5fc3\u5728\u4e8e\u53ef\u64a4\u9500\u64cd\u4f5c<\/strong>\u547d\u4ee4\u5386\u53f2\u7684\u7ba1\u7406\u3002\u5f53\u7528\u6237\u6267\u884c\u4e00\u4e2a\u64cd\u4f5c\u65f6\uff0c\u7cfb\u7edf\u5fc5\u987b\u8bb0\u5f55\u8be5\u64cd\u4f5c\u3002\u5f53\u8bf7\u6c42\u64a4\u9500\u65f6\uff0c\u7cfb\u7edf\u5fc5\u987b\u83b7\u53d6\u6700\u8fd1\u7684\u64cd\u4f5c\uff0c\u5c06\u5176\u53cd\u8f6c\uff0c\u7136\u540e\u4ece\u6d3b\u8dc3\u7684\u5386\u53f2\u8bb0\u5f55\u4e2d\u79fb\u9664\u3002<\/p>\n

    \u6808\u673a\u5236<\/h3>\n

    \u6808\u6570\u636e\u7ed3\u6784\u662f\u6b64\u76ee\u7684\u7684\u7406\u60f3\u9009\u62e9\u3002\u5b83\u9075\u5faa\u540e\u8fdb\u5148\u51fa\uff08LIFO\uff09\u539f\u5219\u3002\u6700\u8fd1\u7684\u547d\u4ee4\u662f\u7b2c\u4e00\u4e2a\u88ab\u64a4\u9500\u7684\u3002\u8fd9\u4e0e\u7528\u6237\u7684\u9884\u671f\u5b8c\u5168\u4e00\u81f4\u3002<\/p>\n

      \n
    • \u538b\u5165\uff1a<\/strong> \u5f53\u547d\u4ee4\u6210\u529f\u6267\u884c\u540e\uff0c\u5b83\u4f1a\u88ab\u538b\u5165\u6808\u4e2d\u3002<\/li>\n
    • \u5f39\u51fa\uff1a<\/strong> \u5f53\u89e6\u53d1\u64a4\u9500\u65f6\uff0c\u6808\u9876\u7684\u547d\u4ee4\u4f1a\u88ab\u5f39\u51fa\u3002<\/li>\n
    • \u67e5\u770b\uff1a<\/strong> \u7cfb\u7edf\u53ef\u4ee5\u5728\u4e0d\u79fb\u9664\u7684\u60c5\u51b5\u4e0b\u68c0\u67e5\u6808\u9876\u547d\u4ee4\uff0c\u8fd9\u5bf9UI\u6307\u793a\u5668\u5f88\u6709\u7528\u3002<\/li>\n<\/ul>\n

      \u5904\u7406\u591a\u7ea7\u64a4\u9500<\/h3>\n

      \u5b9e\u73b0\u5355\u7ea7\u64a4\u9500\u5f88\u7b80\u5355\u3002\u5b9e\u73b0\u591a\u4e2a<\/em>\u64a4\u9500\u5c42\u7ea7\u9700\u8981\u4ed4\u7ec6\u7684\u72b6\u6001\u7ba1\u7406\u3002\u8c03\u7528\u8005\u5fc5\u987b\u7ef4\u62a4\u4e00\u4e2a\u547d\u4ee4\u5bf9\u8c61\u7684\u6301\u4e45\u5217\u8868\u3002\u5f53\u7528\u6237\u6267\u884c\u64cd\u4f5c\u65f6\uff0c\u5217\u8868\u4f1a\u589e\u957f\u3002\u5f53\u7528\u6237\u64a4\u9500\u65f6\uff0c\u5217\u8868\u4f1a\u7f29\u5c0f\u3002<\/p>\n

      \u8003\u8651\u4ee5\u4e0b\u5de5\u4f5c\u6d41\u7a0b\uff1a<\/p>\n

        \n
      1. \u7528\u6237\u6267\u884c\u64cd\u4f5cA\u3002\u547d\u4ee4A\u88ab\u6267\u884c\u3002\u547d\u4ee4A\u88ab\u6dfb\u52a0\u5230\u5386\u53f2\u8bb0\u5f55\u4e2d\u3002<\/li>\n
      2. \u7528\u6237\u6267\u884c\u64cd\u4f5cB\u3002\u547d\u4ee4B\u88ab\u6267\u884c\u3002\u547d\u4ee4B\u88ab\u6dfb\u52a0\u5230\u5386\u53f2\u8bb0\u5f55\u4e2d\u3002<\/li>\n
      3. \u7528\u6237\u64a4\u9500\u3002\u547d\u4ee4B\u88ab\u5f39\u51fa\u3002\u8c03\u7528\u547d\u4ee4B.reverse()\u3002<\/li>\n
      4. \u7528\u6237\u518d\u6b21\u64a4\u9500\u3002\u547d\u4ee4A\u88ab\u5f39\u51fa\u3002\u8c03\u7528\u547d\u4ee4A.reverse()\u3002<\/li>\n<\/ol>\n

        \u8fd9\u79cd\u7ed3\u6784\u786e\u4fdd\u7cfb\u7edf\u72b6\u6001\u80fd\u591f\u7cbe\u786e\u5730\u6062\u590d\u5230\u64cd\u4f5c\u5e8f\u5217\u5f00\u59cb\u4e4b\u524d\u7684\u72b6\u6001\u3002<\/p>\n

        \u8bbe\u8ba1\u53cd\u5411\u903b\u8f91 \ud83d\udd04<\/h2>\n

        \u4e3a\u4e86\u8ba9\u4e00\u4e2a\u547d\u4ee4\u771f\u6b63\u53ef\u64a4\u9500<\/strong>\uff0c\u5b83\u5fc5\u987b\u5177\u5907\u4e00\u79cd\u673a\u5236\u6765\u9006\u8f6c\u5176\u6548\u679c\u3002\u8fd9\u901a\u5e38\u662f\u8bbe\u8ba1\u4e2d\u6700\u590d\u6742\u7684\u4e00\u90e8\u5206\u3002\u5e76\u975e\u6240\u6709\u64cd\u4f5c\u90fd\u80fd\u4ee5\u7b80\u5355\u7684\u65b9\u5f0f\u88ab\u9006\u8f6c\u3002<\/p>\n

        \u72b6\u6001\u4fdd\u5b58<\/h3>\n

        \u67d0\u4e9b\u547d\u4ee4\u9700\u8981\u5728\u6267\u884c\u524d\u4fdd\u5b58\u72b6\u6001\u3002\u5982\u679c\u4e00\u4e2a\u547d\u4ee4\u4fee\u6539\u4e86\u4e00\u4e2a\u590d\u6742\u5bf9\u8c61\uff0c\u539f\u59cb\u72b6\u6001\u5fc5\u987b\u88ab\u4fdd\u7559\uff0c\u4ee5\u4fbf\u5728\u64a4\u9500\u9636\u6bb5\u6062\u590d\u3002\u8fd9\u901a\u5e38\u7531\u547d\u4ee4\u5bf9\u8c61\u81ea\u8eab\u5904\u7406\uff0c\u5b83\u4f1a\u4fdd\u5b58\u6267\u884c\u524d\u63a5\u6536\u8005\u72b6\u6001\u7684\u5feb\u7167\u3002<\/p>\n

        \u65b9\u6cd5\u7b7e\u540d\u8bbe\u8ba1<\/h3>\n

        \u547d\u4ee4\u63a5\u53e3\u5e94\u660e\u786e\u5730\u5b9a\u4e49\u4e00\u4e2a\u64a4\u9500\u65b9\u6cd5\u3002\u8fd9\u786e\u4fdd\u4e86\u6240\u6709\u547d\u4ee4\u7c7b\u578b\u4e4b\u95f4\u7684\u4e00\u81f4\u6027\u3002<\/p>\n

          \n
        • execute()<\/code>\uff1a\u6267\u884c\u6b63\u5411\u64cd\u4f5c\u3002<\/li>\n
        • undo()<\/code>\uff1a\u9006\u8f6c\u64cd\u4f5c\u3002<\/li>\n<\/ul>\n

          \u901a\u8fc7\u5f3a\u5236\u6267\u884c\u6b64\u63a5\u53e3\uff0c\u8c03\u7528\u8005\u5bf9\u6240\u6709\u547d\u4ee4\u4e00\u89c6\u540c\u4ec1\u3002\u5b83\u65e0\u9700\u77e5\u9053\u547d\u4ee4\u662f\u201c\u4fdd\u5b58\u201d\u8fd8\u662f\u201c\u5220\u9664\u201d\u3002\u5b83\u53ea\u9700\u8c03\u7528\u5806\u6808\u9876\u90e8\u547d\u4ee4\u7684undo()<\/code>\u5373\u53ef\u3002<\/p>\n

          \u6269\u5c55\u81f3\u91cd\u505a\u529f\u80fd \ud83d\udd04<\/h2>\n

          \u867d\u7136\u64a4\u9500\u81f3\u5173\u91cd\u8981\uff0c\u91cd\u505a<\/strong>\u91cd\u505a\u5219\u63d0\u4f9b\u4e86\u5b8c\u6574\u7684\u7528\u6237\u4f53\u9a8c\u3002\u91cd\u505a\u5141\u8bb8\u7528\u6237\u91cd\u65b0\u6267\u884c\u4e4b\u524d\u88ab\u64a4\u9500\u7684\u547d\u4ee4\u3002\u8fd9\u9700\u8981\u4e00\u4e2a\u7b2c\u4e8c\u6808\u6216\u5206\u79bb\u7684\u5386\u53f2\u7ba1\u7406\u7b56\u7565\u3002<\/p>\n

          \u91cd\u505a\u6808<\/h3>\n

          \u5f53\u53d1\u751f\u64a4\u9500\u65f6\uff0c\u547d\u4ee4\u5bf9\u8c61\u4e0d\u4f1a\u88ab\u9500\u6bc1\u3002\u76f8\u53cd\uff0c\u5b83\u4f1a\u4ece\u64a4\u9500\u6808\u79fb\u52a8\u5230\u91cd\u505a\u6808\u3002\u5982\u679c\u7528\u6237\u9009\u62e9\u91cd\u505a\uff0c\u547d\u4ee4\u5c06\u4ece\u91cd\u505a\u6808\u4e2d\u5f39\u51fa\u5e76\u91cd\u65b0\u6267\u884c\u3002<\/p>\n

          \u5206\u652f\u903b\u8f91<\/h3>\n

          \u5f53\u6267\u884c\u64a4\u9500\u64cd\u4f5c\u540e\u53c8\u8fdb\u884c\u65b0\u64cd\u4f5c\u65f6\uff0c\u4f1a\u51fa\u73b0\u4e00\u4e2a\u590d\u6742\u60c5\u51b5\u3002\u91cd\u505a\u5386\u53f2\u5c06\u53d8\u5f97\u65e0\u6548\u3002\u5982\u679c\u7528\u6237\u64a4\u9500\u4e86\u4e09\u4e2a\u6b65\u9aa4\uff0c\u7136\u540e\u8f93\u5165\u4e00\u4e2a\u65b0\u5b57\u6bcd\uff0c\u5148\u524d\u7684\u201c\u91cd\u505a\u201d\u6b65\u9aa4\u5c06\u65e0\u6cd5\u518d\u8bbf\u95ee\u3002\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u5fc5\u987b\u6e05\u7a7a\u91cd\u505a\u6808\u3002<\/p>\n

            \n
          • \u573a\u666f\uff1a<\/strong> \u7528\u6237\u7f16\u8f91\u6587\u672c \u2794 \u64a4\u9500\u66f4\u6539 \u2794 \u8f93\u5165\u65b0\u6587\u672c\u3002<\/li>\n
          • \u7ed3\u679c\uff1a<\/strong> \u4e4b\u524d\u7684\u64a4\u9500\u6b65\u9aa4\u5c06\u4e22\u5931\u3002<\/li>\n
          • \u5b9e\u73b0\uff1a<\/strong> \u5728\u6267\u884c\u65b0\u547d\u4ee4\u65f6\u6e05\u7a7a\u91cd\u505a\u6808\u3002<\/li>\n<\/ul>\n

            \u5b9e\u73b0\u4e2d\u7684\u6311\u6218 \u26a0\ufe0f<\/h2>\n

            \u867d\u7136\u547d\u4ee4\u6a21\u5f0f\u4e3a\u53ef\u64a4\u9500\u64cd\u4f5c<\/strong>\u63d0\u4f9b\u4e86\u6e05\u6670\u7684\u7ed3\u6784\uff0c\u4f46\u4ecd\u7136\u5b58\u5728\u4e00\u4e9b\u6311\u6218\u3002\u5f00\u53d1\u8005\u5fc5\u987b\u89e3\u51b3\u8fd9\u4e9b\u95ee\u9898\uff0c\u4ee5\u786e\u4fdd\u7cfb\u7edf\u7684\u6027\u80fd\u548c\u7a33\u5b9a\u6027\u3002<\/p>\n

            \u5185\u5b58\u6d88\u8017<\/h3>\n

            \u5386\u53f2\u6808\u4e2d\u5b58\u50a8\u7684\u6bcf\u4e2a\u547d\u4ee4\u5bf9\u8c61\u90fd\u4f1a\u6d88\u8017\u5185\u5b58\u3002\u5728\u957f\u65f6\u95f4\u8fd0\u884c\u4e14\u64cd\u4f5c\u9891\u7e41\u7684\u4f1a\u8bdd\u4e2d\uff0c\u8fd9\u53ef\u80fd\u5bfc\u81f4\u663e\u8457\u7684\u5185\u5b58\u4f7f\u7528\u3002\u6bcf\u4e2a\u547d\u4ee4\u53ef\u80fd\u9700\u8981\u5b58\u50a8\u5bf9\u63a5\u6536\u8005\u72b6\u6001\u7684\u5f15\u7528\u3002<\/p>\n

              \n
            • \u89e3\u51b3\u65b9\u6848\uff1a<\/strong> \u9650\u5236\u5141\u8bb8\u7684\u64a4\u9500\u5c42\u7ea7\u6570\u91cf\u3002<\/li>\n
            • \u89e3\u51b3\u65b9\u6848\uff1a<\/strong> \u5728\u53ef\u80fd\u7684\u60c5\u51b5\u4e0b\u4f7f\u7528\u5f31\u5f15\u7528\u3002<\/li>\n
            • \u89e3\u51b3\u65b9\u6848\uff1a<\/strong> \u5bf9\u76f8\u4f3c\u64cd\u4f5c\u5b9e\u73b0\u547d\u4ee4\u538b\u7f29\u3002<\/li>\n<\/ul>\n

              \u5e76\u53d1\u95ee\u9898<\/h3>\n

              \u5982\u679c\u5e94\u7528\u7a0b\u5e8f\u5904\u7406\u591a\u4e2a\u7ebf\u7a0b\uff0c\u5386\u53f2\u6808\u5fc5\u987b\u662f\u7ebf\u7a0b\u5b89\u5168\u7684\u3002\u7528\u6237\u53ef\u80fd\u5728\u53e6\u4e00\u4e2a\u7ebf\u7a0b\u6267\u884c\u4e0d\u540c\u547d\u4ee4\u7684\u540c\u65f6\u64a4\u9500\u4e00\u4e2a\u64cd\u4f5c\u3002\u7ade\u4e89\u6761\u4ef6\u53ef\u80fd\u5bfc\u81f4\u72b6\u6001\u635f\u574f\u3002<\/p>\n

                \n
              • \u540c\u6b65\uff1a<\/strong> \u5728\u538b\u5165\u548c\u5f39\u51fa\u64cd\u4f5c\u671f\u95f4\u9501\u5b9a\u5386\u53f2\u6808\u3002<\/li>\n
              • \u6392\u961f\uff1a<\/strong> \u4f7f\u7528\u7ebf\u7a0b\u5b89\u5168\u7684\u961f\u5217\u6765\u7ba1\u7406\u547d\u4ee4\u7684\u6267\u884c\u987a\u5e8f\u3002<\/li>\n<\/ul>\n

                \u590d\u6742\u7684\u53cd\u8f6c\u903b\u8f91<\/h3>\n

                \u5e76\u975e\u6240\u6709\u64cd\u4f5c\u90fd\u6709\u7b80\u5355\u7684\u9006\u64cd\u4f5c\u3002\u5220\u9664\u6587\u4ef6\u5bb9\u6613\u64a4\u9500\uff08\u6062\u590d\u6587\u4ef6\uff09\u3002\u66f4\u65b0\u6570\u636e\u5e93\u8bb0\u5f55\u5219\u66f4\u56f0\u96be\uff08\u9700\u8981\u4e8b\u52a1\u65e5\u5fd7\uff09\u3002\u547d\u4ee4\u5bf9\u8c61\u5fc5\u987b\u5c01\u88c5\u8db3\u591f\u7684\u4fe1\u606f\u4ee5\u53cd\u8f6c\u7279\u5b9a\u64cd\u4f5c\u3002<\/p>\n

                \u8bbe\u8ba1\u7684\u6700\u4f73\u5b9e\u8df5 \ud83d\udcdd<\/h2>\n

                \u4e3a\u4e86\u4fdd\u6301\u6e05\u6670\u7684\u67b6\u6784\uff0c\u5728\u4e3a\u53ef\u64a4\u9500\u64cd\u4f5c<\/strong>.<\/p>\n

                  \n
                • \u4fdd\u6301\u547d\u4ee4\u7b80\u6d01\uff1a<\/strong> \u6bcf\u4e2a\u547d\u4ee4\u5e94\u4ee3\u8868\u4e00\u4e2a\u5355\u4e00\u7684\u903b\u8f91\u64cd\u4f5c\u3002\u9664\u975e\u64cd\u4f5c\u662f\u539f\u5b50\u7684\uff0c\u5426\u5219\u907f\u514d\u5c06\u65e0\u5173\u7684\u64cd\u4f5c\u6279\u91cf\u5408\u5e76\u5230\u4e00\u4e2a\u547d\u4ee4\u4e2d\u3002<\/li>\n
                • \u8bb0\u5f55\u72b6\u6001\u53d8\u5316\uff1a<\/strong> \u660e\u786e\u5b9a\u4e49\u5728 execute()<\/code> \u4e2d\u53d1\u751f\u7684\u72b6\u6001\u53d8\u5316\uff0c\u4ee5\u53ca undo()<\/code> \u6062\u590d\u7684\u5185\u5bb9\u3002\u8fd9\u6709\u52a9\u4e8e\u672a\u6765\u7684\u7ef4\u62a4\u3002<\/li>\n
                • \u8bb0\u5f55\u9519\u8bef\uff1a<\/strong> \u5982\u679c\u547d\u4ee4\u5728\u6267\u884c\u8fc7\u7a0b\u4e2d\u5931\u8d25\uff0c\u5219\u4e0d\u5e94\u5c06\u5176\u6dfb\u52a0\u5230\u5386\u53f2\u6808\u4e2d\u3002\u7528\u6237\u4e0d\u5e94\u80fd\u591f\u64a4\u9500\u4e00\u4e2a\u5931\u8d25\u7684\u64cd\u4f5c\u3002<\/li>\n
                • \u63a5\u53e3\u9694\u79bb\uff1a<\/strong> \u5982\u679c\u4e00\u4e2a\u547d\u4ee4\u65e0\u6cd5\u64a4\u9500\uff0c\u5219\u4e0d\u5e94\u5f3a\u5236\u5176\u5b9e\u73b0 undo \u65b9\u6cd5\u3002\u4e3a\u53ef\u6267\u884c\u547d\u4ee4\u548c\u53ef\u64a4\u9500\u547d\u4ee4\u4f7f\u7528\u4e0d\u540c\u7684\u63a5\u53e3\u3002<\/li>\n<\/ul>\n

                  \u4e0e\u5176\u4ed6\u6a21\u5f0f\u7684\u6bd4\u8f83 \ud83d\udd0d<\/h2>\n

                  \u867d\u7136\u547d\u4ee4\u6a21\u5f0f\u975e\u5e38\u9002\u5408 \u53ef\u64a4\u9500\u64cd\u4f5c<\/strong>\uff0c\u4f46\u5b83\u7ecf\u5e38\u4e0e\u5907\u5fd8\u5f55\u6a21\u5f0f\u8fdb\u884c\u6bd4\u8f83\u3002\u7406\u89e3\u5b83\u4eec\u4e4b\u95f4\u7684\u533a\u522b\u6709\u52a9\u4e8e\u9009\u62e9\u5408\u9002\u7684\u5de5\u5177\u3002<\/p>\n\n\n\n\n\n\n\n\n
                  \u7279\u6027<\/th>\n\u547d\u4ee4\u6a21\u5f0f<\/th>\n\u5907\u5fd8\u5f55\u6a21\u5f0f<\/th>\n<\/tr>\n<\/thead>\n
                  \u5173\u6ce8\u70b9<\/td>\n\u52a8\u4f5c\u5c01\u88c5<\/td>\n\u72b6\u6001\u5c01\u88c5<\/td>\n<\/tr>\n
                  \u64a4\u9500\u673a\u5236<\/td>\n\u53cd\u8f6c\u903b\u8f91<\/td>\n\u6062\u590d\u4e4b\u524d\u7684\u72b6\u6001<\/td>\n<\/tr>\n
                  \u6027\u80fd<\/td>\n\u5982\u679c\u903b\u8f91\u7b80\u5355\uff0c\u5185\u5b58\u5360\u7528\u8f83\u4f4e<\/td>\n\u9700\u8981\u66f4\u9ad8\u5185\u5b58\u6765\u4fdd\u5b58\u72b6\u6001\u5feb\u7167<\/td>\n<\/tr>\n
                  \u590d\u6742\u5ea6<\/td>\n\u9700\u8981\u53cd\u5411\u903b\u8f91<\/td>\n\u9700\u8981\u5feb\u7167\u903b\u8f91<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

                  \u5f53\u64cd\u4f5c\u8f83\u4e3a\u590d\u6742\u4e14\u53cd\u5411\u903b\u8f91\u660e\u786e\u65f6\uff0c\u4f18\u5148\u4f7f\u7528\u547d\u4ee4\u6a21\u5f0f\u3002\u5f53\u72b6\u6001\u8fc7\u4e8e\u590d\u6742\u800c\u65e0\u6cd5\u903b\u8f91\u4e0a\u56de\u9000\u65f6\uff08\u4f8b\u5982\u4fdd\u5b58\u7a97\u53e3\u7684\u5b8c\u6574\u72b6\u6001\uff09\uff0c\u5219\u66f4\u9002\u5408\u4f7f\u7528\u5907\u5fd8\u5f55\u6a21\u5f0f\u3002<\/p>\n

                  \u73b0\u5b9e\u4e16\u754c\u7684\u5e94\u7528\u573a\u666f \ud83c\udf0d<\/h2>\n

                  \u8be5\u6a21\u5f0f\u4e0d\u4ec5\u9650\u4e8e\u6587\u672c\u7f16\u8f91\u5668\uff0c\u9002\u7528\u4e8e\u9700\u8981\u72b6\u6001\u7ba1\u7406\u7684\u5404\u4e2a\u9886\u57df\u3002<\/p>\n

                  \u91d1\u878d\u7cfb\u7edf<\/h3>\n

                  \u5728\u94f6\u884c\u8f6f\u4ef6\u4e2d\uff0c\u4ea4\u6613\u5fc5\u987b\u53ef\u9006\u3002\u5982\u679c\u53d1\u73b0\u9519\u8bef\uff0c\u53d6\u6b3e\u547d\u4ee4\u53ef\u4ee5\u88ab\u64a4\u9500\u3002\u547d\u4ee4\u6a21\u5f0f\u786e\u4fdd\u8d26\u672c\u4fdd\u6301\u4e00\u81f4\u3002<\/p>\n

                  \u56fe\u5f62\u8bbe\u8ba1\u5de5\u5177<\/h3>\n

                  \u7ed8\u5236\u56fe\u5f62\u65f6\uff0c\u7528\u6237\u671f\u671b\u80fd\u591f\u79fb\u52a8\u3001\u8c03\u6574\u5927\u5c0f\u548c\u5220\u9664\u5bf9\u8c61\u3002\u6bcf\u6b21\u5de5\u5177\u4ea4\u4e92\u90fd\u53d8\u6210\u4e00\u4e2a\u547d\u4ee4\u3002\u5386\u53f2\u6808\u5141\u8bb8\u8fdb\u884c\u590d\u6742\u7684\u7f16\u8f91\u4f1a\u8bdd\u800c\u4e0d\u4f1a\u4e22\u5931\u6570\u636e\u3002<\/p>\n

                  \u914d\u7f6e\u7ba1\u7406<\/h3>\n

                  \u7cfb\u7edf\u7ba1\u7406\u5458\u7ecf\u5e38\u66f4\u6539\u914d\u7f6e\u3002\u5982\u679c\u66f4\u6539\u5bfc\u81f4\u7cfb\u7edf\u5d29\u6e83\uff0c\u80fd\u591f\u56de\u9000\u5230\u4e4b\u524d\u7684\u914d\u7f6e\u81f3\u5173\u91cd\u8981\u3002\u547d\u4ee4\u5c01\u88c5\u4e86\u914d\u7f6e\u7684\u53d8\u66f4\u3002<\/p>\n

                  \u5173\u4e8e\u7ed3\u6784\u7684\u6700\u540e\u601d\u8003 \ud83c\udfd7\ufe0f<\/h2>\n

                  \u5b9e\u73b0 \u53ef\u64a4\u9500\u64cd\u4f5c<\/strong>\u4f7f\u7528\u547d\u4ee4\u6a21\u5f0f\u5b9e\u73b0\u53ef\u64a4\u9500\u64cd\u4f5c\u9700\u8981\u4ed4\u7ec6\u89c4\u5212\u3002\u5b83\u5c06\u5173\u6ce8\u70b9\u4ece\u76f4\u63a5\u51fd\u6570\u8c03\u7528\u8f6c\u79fb\u5230\u9762\u5411\u5bf9\u8c61\u7684\u5c01\u88c5\u3002\u8c03\u7528\u8005\u7ba1\u7406\u6d41\u7a0b\uff0c\u800c\u547d\u4ee4\u5bf9\u8c61\u7ba1\u7406\u903b\u8f91\u3002<\/p>\n

                  \u901a\u8fc7\u9075\u5faa\u5173\u6ce8\u70b9\u5206\u79bb\u7684\u539f\u5219\uff0c\u5f00\u53d1\u8005\u80fd\u591f\u6784\u5efa\u51fa\u7a33\u5065\u4e14\u7528\u6237\u53cb\u597d\u7684\u7cfb\u7edf\u3002\u5386\u53f2\u6808\u6210\u4e3a\u7528\u6237\u4f53\u9a8c\u7684\u652f\u67f1\uff0c\u63d0\u4f9b\u5b89\u5168\u6027\u548c\u7075\u6d3b\u6027\u3002\u5c3d\u7ba1\u5728\u5185\u5b58\u548c\u5e76\u53d1\u65b9\u9762\u5b58\u5728\u6311\u6218\uff0c\u4f46\u901a\u8fc7\u5408\u7406\u7684\u67b6\u6784\u51b3\u7b56\uff0c\u8fd9\u4e9b\u6311\u6218\u662f\u53ef\u4ee5\u7ba1\u7406\u7684\u3002<\/p>\n

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                  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